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Wavelength of light used in an opticla i...

Wavelength of light used in an opticla instrument are `lambda_1=4,000 overset@A` and `lambda_2=5,000 overset @A`,then ratio of their respective resolving powers(corresponding to `lambda_1` and `lambda_2`) is:

A

`16:25`

B

`9:1`

C

`4:5`

D

`5:4`.

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MODERN PUBLICATION-UNIT TEST -06-EXERCISE
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